Diode-Bridge Voltage-Controlled Attenuator - simulation/results/small_vc_0.log

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John Lauer Saif Abdessayed's diode-bridge VCA: KiCad project, Gerbers, BOM, simulations, reports, and the earlier RC filter test 45f3ff6 11d ago

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Circuit: * diode-bridge voltage-controlled attenuator

Doing analysis at TEMP = 27.000000 and TNOM = 27.000000

Using SPARSE 1.3 as Direct Linear Solver

Initial Transient Solution
--------------------------

Node                                   Voltage
----                                   -------
vcc                                         12
vee                                        -12
ctrl                                         0
ctrlf                                        0
in                                           0
bufin                                        0
buf                                          0
out                                          0
bra                                    11.8059
bra_i                                  11.8059
brb_i                                  11.8059
brb                                    11.8059
brp                                    11.9896
brn                                    11.6743
opout                             -6.27596e-06
sense                              6.27596e-11
base                              -6.22105e-06
bop#branch                         1.16835e-11
e_buf#branch                                 0
vin#branch                                   0
vctrl#branch                                 0
vee#branch                                   0
vcc#branch                         -4.7278e-07


No. of Data Rows : 10001

  Measurements for Transient Analysis

vout_pp             =  9.684249e-02 from=  2.000000e-02 to=  3.000000e-02
vin_pp              =  9.999938e-02 from=  2.000000e-02 to=  3.000000e-02
gain                =  9.68431e-01

Fourier analysis for v(out):
  No. Harmonics: 10, THD: 0.158702 %, Gridsize: 200, Interpolation Degree: 1

Harmonic Frequency   Magnitude   Phase       Norm. Mag   Norm. Phase
-------- ---------   ---------   -----       ---------   -----------
 0       0           7.60838e-05 0           0           0          
 1       1000        0.0484282   -0.0086654  1           0          
 2       2000        7.64968e-05 -90.26      0.00157959  -90.251    
 3       3000        7.41895e-06 0.679505    0.000153195 0.68817    
 4       4000        3.72753e-07 90.0471     7.69703e-06 90.0558    
 5       5000        1.90379e-08 14.0725     3.93117e-07 14.0812    
 6       6000        8.60698e-09 88.77       1.77727e-07 88.7786    
 7       7000        8.7094e-10  166.422     1.79841e-08 166.431    
 8       8000        1.44831e-10 60.1739     2.99063e-09 60.1826    
 9       9000        3.41303e-11 89.4166     7.04761e-10 89.4253    




Total analysis time (seconds) = 0.183

Total elapsed time (seconds) = 0.203 

Total DRAM available = 3647.488 MB.
DRAM currently available =  571.852 MB.
Maximum ngspice program size =   21.945 MB.
Current ngspice program size =   14.074 MB.

Shared ngspice pages =   11.637 MB.
Text (code) pages =    6.156 MB.
Stack = 0 bytes.
Library pages =    2.699 MB.